Heat exchanger tube



FIG. 1 is a front view of a heat exchanger tube showing a first embodiment of our new design, the opposite side being an identical image of the side shown herein;

FIG. 2 is a left side view thereof, the opposite side being an identical image of the side shown herein;

FIG. 3 is a top view thereof, the opposite side being an identical image of the side shown herein;

FIG. 4 is an enlarged view of part 4-4 in FIG. 1 thereof;

FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 1;

FIG. 6 is an enlarged view of part 6-6 in FIG. 5 thereof;

FIG. 7 is a front view of a heat exchanger tube showing a second embodiment of our new design, the opposite side being an identical image of the side shown herein;

FIG. 8 is a left side view thereof, the opposite side being an identical image of the side shown herein;

FIG. 9 is a top view thereof, the opposite side being an identical image of the side shown herein;

FIG. 10 is an enlarged view of part 10-10 in FIG. 7 thereof;

FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 7; and,

FIG. 12 is an enlarged view of part 12-12 in FIG. 11 thereof.

The broken lines wherever present in the drawing disclosure illustrate portions of the heat exchanger tube that form no part of the claimed design or represent numbered section lines that form no part of the claimed design.

No claim is made to portions of the heat exchanger tube beyond the broken line boundaries of the left and right ends of the claimed design. Any portions of the design not shown form no part of the claimed design. 

CLAIM The ornamental design for a heat exchanger tube, as shown and described. 